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Analysis and Design of Improved Antennas for GPR

机译:GPR改进型天线的分析与设计

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摘要

In this paper a concept of adaptive antennas for ground penetrating radar is introduced. It is demonstrated that antenna adaptation with respect to the antenna feed-point reflection can be achieved for different ground types. This adaptation can be realized using a wire bow-tie antenna with variable flare angle. By varying the flare angle, a minimal feed-point reflection can be obtained for different types of ground. Moreover, the shape and size of the footprint of the bow-tie antenna can be adjusted by changing the flare angle for improving detection/imaging. Furthermore, a novel loading scheme based on a combination of a capacitive and resistive loading is introduced, and applied on a solid bow-tie antenna. It is shown that using this loading scheme an efficient ultra-wideband antenna for ground penetrating radar applications can be realized.
机译:本文介绍了一种适用于探地雷达的自适应天线的概念。已经证明,对于不同的地面类型,可以实现针对天线馈电点反射的天线适配。可以使用具有可变喇叭角的金属领结天线来实现这种适配。通过改变耀斑角度,可以为不同类型的地面获得最小的馈电点反射。此外,可以通过改变喇叭角来调整领结天线的覆盖区的形状和大小,以改善检测/成像。此外,介绍了一种基于电容性负载和电阻性负载的组合的新颖负载方案,并将其应用于实心领结天线。结果表明,使用这种加载方案,可以实现用于探地雷达应用的高效超宽带天线。

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